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(No Model.) 6 SheetsSheet 1. T. BRANDT. MACHINE FOR CUTTING AND FINISHING METAL STRIPS.

Patented May15,1894.

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T. BRANDT. MACHINE FOR CUTTING AND FINISHING METAL STRIPS.

No. 519,903. Patented May 15,1894.

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No. 519,903. Patented May 15,1894.

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T. BRANDT. MACHINE FOR GUTTING AND FINISHING METAL STRIPS.

No. 519,903. Patented May 15,1894.

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UNITED STATES PATENT OFFICE.

THEODOR BRANDT, OF QUEDLINBURG, GERMANY.

MACHINE FOR CUTTING AND FINISHING METAL STRIPS.

SPECIFICATION forming part of Letters Patent No. 19,903, dated May 15, 1894. Application filed November 1, 1893. Serial No. 489,620. (No model.)

To all whom it may concern.-

Be it known that I, THEODOR BRANDT, of Quedlinburg, in the Kingdom of Prussia, Germany, have invented a new and useful Improvement in Machines for Cutting and Finishing Metal Strips, of which the following is a specification.

This invention relates to a machine for automatically cutting and finishing brass strips or reglets used for printing, and for other purposes.

The operation of the machine, is briefly as follows: The blank is first out into the requisite length by a circular saw, and the edge of the severed section is worked smooth by knives, and any fins are mechanically removed so that the reglet leaves the machine in a perfect finished condition.

In the accompanying drawings Figure 1 is a side elevation of the machine; Fig. l a detail of delivery channel M; Fig. 2 a plan; Fig. 3 a front elevation; Fig.4: a plan of Fig. 3; Fig. 5 a side elevation, showing the work clamped in position and the saw raised; Fig. 6 an inner end view of part of the machine; Fig. 7 aside view of the clamp-operating mechanism; Fig. 8 an end view of the fixed knife holder; Fig. 9 a top view of the knife holders; Fig. 10 a side elevation of part of the machine; Fig. 11 an end view of the machine. Fig. 12 shows the mechanism for elevating the clamp lever. Figs. 13 to 18 show consecutive positions of the knife holders B B The letter A represents the frame of the machine, provided with bearings a, in which turns a crank 19, which imparts reciprocating motion by rod 0, and slide S to aknife-carrying slide 13*.

B is a fixed knife holder and d, a work holding slide that receives the blank metal strip or other work, which is adapted to be moved toward a stop 6, adjustable on rail d The front end of the metal strip i, is held between two clamps g, g (Figs. 3, 6, and 13) in such a manner, that the clamp 9, receives its proper pressure by means of its lever o and disk 0. The clamp 9 receives its pressore from lever T, which is pressed upward by arm .9 of rails, and disk T. In this position, the lever r, is held by angle-lever 15. While this takes place, the slide B is at rest.

The circular saw D is adapted to be raised 19 (Fig. 2).

by disk E, which acts upon the bearing F, of the saw, to sever the desired work-piece 5 from the metal strip 2". After this has taken place, the saw D descends (Figs. 3 and 6), the

severed strip i (Fig. 3) which is held in place by the clamp 9 will now be fed by motion of slide 13*, across the knives z, of the stationary knife holder B, to trim the raw edge of the work piece. Before the slide B arrives at its extreme position (Fig. 15) the tin produced by the knives a, is removed from the work F, by a stamping knife 7L2, on slide 13?. This knife is pressed downward by a lever is, operated by nose Z, fast on shaft m. This shaft receives its motion through rod 0, and lever n, from eccentric H on shaft f, (Figs. 8 and 10.) In its extreme position, the slide B remains at rest, at the right hand side, as long as the slide S, of rod 0, moves in its guide While the slide B is at rest, (Fig. 16) the lever r, turning on pivot g, is released from angle lever t, by the contact of the latter with projection s, of rail .9. This will cause the pressure lever r, to be depressed by its counterweight J, whereby the metal strip 2?, is released from clamp g The stripping lever K mounted in frame 13', will now advance (Fig. 16,) behind the work i to push the same upon the inclined delivery channel M, when the slide B recedes and after the disengagement from the clamp 9 (Fig. 12). In this way, the finished metal strip is discharged from the machine. The channel M (Fig. 17) partakes of the motion of slide B for the reception of the blank. The channel engages a groove 4), of the work table and is influenced by a spring 10. It is crowded back by the slide B and moves with the same, until arrested by the stop a: (Figs. 1 and 2). Before the slide B begins its motion toward the right, the slide with the work holder at, and clamp g, is moved to a slight extent toward the knife 2 of the slide 13*. This is effected by disk N and lever 11/, (Figs. 2, 10, and 11.) In this way the edge of the next work piece 71', arrives in front of the knives 2 which thus operate upon the same (Fig. 17). The vertically movable stamping knife h,

will now act upon the edge of the work piece 1', (Fig. 18) by the pressure of lever 19', and disk P, after which the stamping knife will again rise. Any chips that may adhere to the blank or the knives are removed by the brushes u, 102. The slide with its work holder (1', and clamp g,will now commence its backward motion, which is eifected by lever y, and disk N. In this way proper space is given, to the subsequently ascending circular saw. The first edge of the work piece i, having been thus properly finished, the clamp g, is released by lever and the rail d of slide 13 1s by its motion placed opposite to work holder (1'. The Work is now slid up to the stop e, after which the two clamps g, 9 willagain come into action (Figs. 3, 7, and 13) and the saw will rise and sever the same, whereupon the operation is repeated.

Motion is imparted to the principal parts of the machine by the crank 19, (Fig. 1,) by means of shaftf, (Fig. 11) upon which the various driving disks are keyed. The disk P serves to impart motion to the lever 19, operating knife h, for removing the fin caused by the action of the knives on slide 13 The disk 0 serves to impart motion to the lever 0,and consequently to the clamp g. The disk N serves to oscillate lever y, and to reciprocate the work holder d, connected therewith, in order to insure the motion of the movable knife-holder B The disk'H, serves to impart motion to the train of levers that operate the knife b and the take off slide K, (Figs;

2 and 10.) The circular saw D is raised by means of disk E, acting upon the bearing F, and receives its fast rotating motion by disk It mounted upon crank shaft 1), (Figs. 1 and 2.) A pivoted longitudinal rail or lever 8, having arm 8 and projection s, bears upon the eccentric T.

In order to impart to the clamp 9 the pressure for the proper engagement of the work, the rail 8 is elevated by eccentric T, and the arm 8 passes under the lever r. In this po sition the lever r, is retained by the projection oc of angle lever 25, until the disengagement is effected by projection s, and the lever 0 is supported upon projection w.

The operation of the machine is automatic, it finishes the blank on both sides with great accuracy and produces a large amount of work in a short time.

What I claim is- 1. In a machine for cutting and finishing metal blanks, the combination of a vertically movable saw with a pair of knife holders, one of which is movable, and with means for carrying the severed strip, substantially as specified.

2. The combination of a'saw with a fixed knife holder, a horizontally movable knife holder, a vertically movable stamping knife, and with means for carrying the severed strip, substantially as specified.

3. The combination of crankrod c, with a slide S, guide 19, movable knife holder B clamp 9 and knife 71 substantially as specified. V r

4. The combination of fixed knife holder B, with lever is, knife h, slide K and clamp g, substantially as specified.

5. The combination of a fixed knife holder with a movable knife holder, clamps g, 9 a circular saw D a vertically movable bearing F and a disk E, foroperating the bearing, substantially as specified.

6. The combination of delivery channel M, with take off slide K movable knife holding slide B and with means for carrying the severed strip, substantially as specified.

'7. The combination of a vertically movable saw, with a pair of clamps, a pair of knife holders, one [of which is movable, a pair of trimming knives and a discharge channel, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THEODOR BRANDT.

Witnesses:

MAX MATTHAI, CARL BORNGRAEBER. 

